GdSb
GdSb is a stable metallic binary compound consisting of gadolinium and antimony used in materials science research.
About GdSb
GdSb is a metallic compound formed from the rare-earth element gadolinium and the metalloid antimony. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement that has been extensively characterized across multiple crystallographic databases. Its electronic nature as a metal makes it a subject of interest for fundamental condensed matter research. The material is primarily utilized in experimental physics to explore magnetic and electronic phenomena inherent to rare-earth pnictides.
Key Properties
Cross-validated computational properties for GdSb, aggregated across 5 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of GdSb. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for GdSb, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| — | — | 0.00 | 0.0000 | -1.165 | — |
| Fm-3m (No. 225) | cubic | 0.00 | 0.0000 | -35.888 | 7.51 |
| — | — | 0.00 | 0.0000 | -1.165 | — |
| — | — | 0.00 | 0.0027 | -1.162 | — |
| — | — | 0.00 | 0.2355 | -0.930 | — |
| — | — | 0.00 | 0.2880 | -0.877 | — |
| — | — | 0.00 | 0.3320 | -0.833 | — |
| — | — | 0.00 | 0.4040 | -0.761 | — |
| — | — | 1.45 | 0.5569 | -0.608 | — |
| Cmcm (No. 63) | orthorhombic | — | — | — | 7.97 |
| P-1 (No. 2) | triclinic | — | — | — | 6.04 |
| P-1 (No. 2) | triclinic | — | — | — | 5.64 |
Applications
Where GdSb is used.
Frequently Asked Questions
Common questions about GdSb, answered from cross-validated data.
What is GdSb?
GdSb is a stable metallic binary compound consisting of gadolinium and antimony used in materials science research.
What is GdSb used for?
What is the band gap of GdSb?
Is GdSb a metal, semiconductor, or insulator?
Is GdSb thermodynamically stable?
What is the crystal structure of GdSb?
What is the density of GdSb?
How many polymorphs of GdSb are known?
What elements does GdSb contain?
Where does the data for GdSb come from?
How It Compares
As a stable metallic pnictide, GdSb serves as a foundational reference point for understanding the behavior of rare-earth antimonides. It represents a well-defined structural archetype within the broader family of binary rare-earth intermetallics, providing a baseline for investigating how the localized magnetic moments of gadolinium interact with the conduction electrons in a metallic lattice.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- alexandria — Data from Alexandria. Cite: Schmidt et al., npj Comput. Mater. 10, 200 (2024). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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